Feature: 1. Identify and load drivers for multiple modules automatically.? 2. Supports full load operation within the operating temperature range, with good performance 3. Ultra-fast MPPT tracking speed and guaranteed tracking efficiency.? 4. Small size, easy to transport and store, easy to use and practicality 5. Strict quality control and quality assurance, high safety factor, can be used with peace of mind Spec: Item type: Solar controller Nominal voltage: 12V / 24V Maximum power point tracking efficiency: Greater than or equal to 95% Standby power consumption: 0.5 W ~ 1.2 W Cooling method: Auto cooling Maximum input voltage: 100 VDC nominal voltage Minimum MPPT voltage: Battery voltage in time real + 2V Initial charging voltage: Real-time battery voltage + 3 V Low input voltage protection voltage: Real-time battery voltage + 2 V Rated input power: 520 W for 12 V acid battery system and 1040 W for 24 V battery system Maximum rated load current: 40 A Temperature compensation: -3 mV / C / 2V (?standard) Charging method: 3 stages: CC (fast charging) -CV (constant voltage charging) -CF (floating charging) Output voltage accuracy